The reason your Scheduled Application reports are not running is due to an apparent Bug in our system when the Last Month date filter is used.

To work past this, we recommend running the same Application report using the Between date filter. For example, you can run the report and change the date range to "between" and set the between dates as 12/1/2017 and 12/31/2017 for the same results. This should run your report and allow you to move past the error as our Development team continues to investigate